How many engineers will we need next year?

Questions CTOs ask

How do you forecast engineering headcount?

Engineering headcount forecasting combines bottom-up demand (planned projects, maintenance burden, and on-call requirements) with top-down constraints (budget, revenue-per-engineer targets, and growth rate). You should account for attrition (typically 10-20% annually in tech), ramp-up time for new hires (3-6 months to full productivity), and time-to-hire, so a requisition is opened early enough that the person lands when the gap actually appears. This tool models exactly those inputs — it does not model recruiting funnel conversion rates.

What is the ideal engineer-to-manager ratio?

The widely accepted range is 5-8 engineers per engineering manager, with 6-7 being the sweet spot for most organizations. Smaller ratios (4-5) work well for junior teams or complex domains requiring heavy mentorship, while larger ratios (8-10) can work with senior, autonomous teams. Going below 4 creates unnecessary management overhead, and exceeding 10 typically means managers cannot provide adequate support.

When should you hire your first engineering manager?

Most startups should hire or promote their first engineering manager when the team reaches 6-8 engineers. At this size, the technical founder or lead can no longer effectively handle both people management and technical leadership without one suffering. Signs you have waited too long include declining 1:1 frequency, delayed performance reviews, unresolved team conflicts, and the tech lead becoming a bottleneck for all decisions.